Study on the heat treatment of 03Ni18Co9Mo5TiAl steel for high synthetic mechanical application in defense products
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https://doi.org/10.54939/1859-1043.j.mst.FEE.2022.185-190Keywords:
Maraging steel; 03Ni18Co9Mo5TiAl alloy steel; High strength martensitic steel; Heat treatment of maraging steel; Aging martensitic steel.Abstract
The maraging steels is a special steel system with the highest strength of all steels and is widely used in the military for the manufacture of rocket engine shells, armor-piercing shells, etc. Steel 03Ni18Co9Mo5TiAl is one of these grades. This paper reseach heat treatment of 03Ni18Co9Mo5TiAl steel including quenching and aging, observing microstructure. Measurement of hardness, tensile strength as the basis for selecting heat treatment regime for high mechanical properties, applications in defense products. The obtained results show that quenching at 820 oC, aging at 490 oC for 4 - 6 h for hardness reaches 53,5 HRC and tensile strength over 2200 MPa.
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